Johannes Kepler

"The celestial machine is not a divine organism but a divine clock."

"In unity there is strength; in discord there is weakness."

"The sun is the only source of heat and light in the universe."

"Knowledge is the treasure of the mind; wisdom is the treasure of the heart."

"Providence is not blind, but all-seeing."

"The mind's highest calling is to understand the mind of God."

"The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment."

"I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses."

"Nothing is so important for the progress of human culture as the opening up of new fields for fine intellectual work."

"Geometry will always be the foundation of knowledge, and I urge you never to despise it."

"The chief aim of all investigations of the external world should be to discover the rational order and harmony which has been imposed upon it by God."

"I was merely thinking God's thoughts after him."

"Astronomy is not impious; rather it shows the greatness of our Creator."

"The mathematically beautiful is always true; truth resides in mathematics."

"What we seek to understand drives all intellectual pursuit."

"Even the smallest discovery in the heavens outweighs the greatest earthly conquest."

"Wonder is the beginning of wisdom; it is the seed from which all knowledge grows."

"I do not presume to know God's mind, only to read his creation."

"The sun loses nothing by shining into a puddle."

"If there is gravity which attracts all bodies to one another, then there must be something in their nature which makes them attract."

"The universe is a harmony; those who cannot hear it are deaf to truth."

"Take away astronomy and man loses his greatest inspiration."

"Where there is matter, there is geometry."

"To invent something, one must have the courage to think differently."

"The real voyage of discovery consists not in seeking new landscapes but in having new eyes."

"God created the world in a manner that reflected eternal mathematical principles."

"We are not to imagine that the visible world is the whole world."

"All nature loves to hide her secrets, which is why we must pursue knowledge relentlessly."

"What the mind can imagine, the hand can measure."

"The universe speaks to us in the language of mathematics."